We have just added this feature (though I am not sure I love the color).
Let me know what feedback you may have.
Thank you BB, color doesn't matter , as long as I can differentiate between the one's I have done and the one's I need to do, all will be ok.
The color decision is yours , that's cosmetic . But please do assure us that if in future you decide to change the color from purple to something else , then all the sums that are now purple should automatically change to the new color.We shouldn't loose our previous work, We shouldn't have to go through all the sums again and recheck if we have already done them or not.
This is what happened this time. All the sums that I had done and were showing grey initially before June 23 -2012 suddenly became their default color on June 23 . It was like all questions were new ! I had to click each question , open it up and assure myself that these were the same questions that I had done earlier, only that now their font's were back to normal and no longer changing color.
So lets say 6 months down the line( or later, perhaps a year or two down the line ) , the decision is taken to make the fonts color green( just supposing), then all the sums that are now purple should automatically turn to green. if they do not turn automatically to green but to the default color initially then we would have to do the same process all over again. We would have lost our hard work . We would have to again reopen each questions and make sure we had done them. ( And this we would have to do each time the font's color was changed ).
So its wise to have a standard color, that will be there for eternity. Less risk of us loosing our work.( Some of us are associated with GMAT and GMAT CLUB for our whole lives , we would certainly like to mark the sums that we have already done , we wouldn't want some one to come one day and erase all our markings and make us feel that this is a new book)
I have taken a screen shot of the font's changing color and saved it the pen drive , so that if this feature disappears again I will have proof
Now things are as they were before, but did you try to find out how this feature was lost . I mean according to you this is something new, but I know this was there before , this is something that still baffles me.( and I think you too ! )
Anyway now that it's working, all is well.( We have already forgiven the person if any, who inadvertently could be responsible
Now we can track our progress in a more better way. Please do convey my gratitude to the Designers involved. Very Well Done each one of them!
Thank you everyone once again.